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Texas Instruments ADC1175CIMTCX
- Part No.:
- ADC1175CIMTCX
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 24-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
ADC1175CIMTCX.pdf
- Description:
- IC ADC 8BIT TWO-STEP 24TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,228
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Product details
Overview
ADC1175CIMTCX from Texas Instruments is an 8-bit, 20 MSPS analog-to-digital converter with internal sample-and-hold, single +5V operation, TRI-STATE digital outputs, and industry-standard TSSOP-24 pinout. It delivers 7.5 effective bits (ENOB), consumes 60 mW typical power, and supports video digitization in portable imaging systems.
For engineers reviewing the ADC1175CIMTCX datasheet, ADC1175CIMTCX pinout, ADC1175CIMTCX application, or ADC1175CIMTCX equivalent, this page provides verified technical context, real-world timing behavior, reference ladder configuration options, and validated alternatives for video and CCD imaging signal chains requiring low-power, DC-accurate sampling up to 20 MSPS.
Technical Context
The ADC1175CIMTCX uses a unique pipeline architecture achieving 7.5 ENOB at 20 MSPS with 30 ps rms aperture jitter and 120 MHz analog input bandwidth. Its conversion range is defined by externally set VRT (1.0–AVDD) and VRB (0–4.0 V) pins, enabling flexible full-scale adjustment between 1.0 V and 2.8 V differential.
It features dual DVDD supplies: Pin 13 powers output drivers (2.5–5.25 V), while Pin 11 powers the digital core and may be lowered for level-shifting. Sampling occurs on the falling edge of CLK; data appears after 2.5 clock cycles plus 16–19.5 ns output delay, with OE-controlled TRI-STATE outputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 8-bit straight binary output; ensures compatibility with standard 8-bit data buses and video FIFOs. |
| Max Sampling Rate | 20 MSPS minimum (30 MSPS typical); supports NTSC/PAL digitization and CCD line rates up to 20 MHz. |
| ENOB | 7.5 bits typical at 20 MSPS; guarantees ≥45.7 dB SINAD for high-fidelity video signal capture. |
| DNL | ±0.75 LSB maximum; ensures no missing codes and monotonic transfer function critical for imaging linearity. |
| Power Consumption | 60 mW typical (excluding IREF); enables battery-powered portable video cameras and embedded vision modules. |
| Analog Input Bandwidth | 120 MHz; supports accurate sampling of fast-rising video edges and composite sync pulses without aliasing. |
| Aperture Jitter | 30 ps rms; limits SNR degradation to <0.5 dB at 4.43 MHz input, preserving color fidelity in digitized video. |
Pinout & Package
TSSOP-24 package (Package Number PW), 0.65 mm pitch, 7.8 mm × 4.4 mm body size, exposed thermal pad not present. RoHS-compliant, commercial temperature range (−20°C to +75°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (19) | Analog input | Accepts signals between VRB and VRT; input capacitance varies (4 pF low CLK, 11 pF high CLK), requiring wideband driver amplifiers like LMH6702. |
| VRT (17), VRB (23) | Reference ladder top/bottom | Define full-scale range; VRT = 1.0–AVDD V, VRB = 0–4.0 V; delta must be 1.0–2.8 V for guaranteed performance. |
| VRTS (16), VRBS (22) | Reference bias terminals | Internal pull-up/pull-down resistors enable self-bias: short VRT↔VRTS and VRB↔VRBS for ~2.6 V / ~0.6 V references. |
| CLK (12) | Sampling clock input | Falling-edge triggered; supports 1–30 MHz; halting in logic-low state reduces digital current to ~100 µA for power gating. |
| OE (1) | Output enable | Active-low control of D0–D7 TRI-STATE outputs; enables bus sharing and synchronous data capture in multi-device systems. |
| D0–D7 (3–10) | Digital outputs | CMOS/TTL-compatible, straight binary; D0 = LSB, D7 = MSB; valid after rising CLK edge with 16–19.5 ns delay. |
| AVDD (14,15,18), DVDD (11,13) | Analog/digital supplies | Separate bypassing required: 10 µF + 0.1 µF per supply; Pin 11 (core DVDD) may be ≤ Pin 13 (driver DVDD) by <0.5 V for level shifting. |
| AVSS (20,21), DVSS (2,24) | Analog/digital grounds | Must be tied together near device; split-plane layout recommended to minimize digital noise coupling into analog path. |
Key Features
| Feature | Design Value |
|---|---|
| Internal Sample-and-Hold | Eliminates need for external S/H circuitry; enables direct connection to video amplifiers and CCD output buffers. |
| Single +5V Operation | Reduces system BOM count and simplifies power design; AVDD/DVDD share common +5 V source with separate bypassing. |
| TRI-STATE Outputs with OE | Allows direct connection to shared data buses without external buffers; essential for compact video frame grabber designs. |
| Industry-Standard Pinout | Enables drop-in replacement in legacy video digitizer PCBs designed for similar-speed 8-bit ADCs (e.g., MAX1175 footprint compatibility). |
| Reference Ladder Flexibility | VRT/VRB pins accept external references or self-bias via VRTS/VRBS; supports custom full-scale ranges for specialized imaging sensors. |
Applications
| Video Digitization | Digital Still Cameras |
|---|---|
Use Scenario: Digitizing composite NTSC or PAL video signals in portable media players and USB video capture dongles. IC Role / Device Role / Timing Role: Primary A/D converter capturing luminance/chrominance at 13.5 MHz (ITU-R BT.601) or 27 MHz (HD component), synchronized to external pixel clock. Use Value: 7.5 ENOB and 45.7 dB SINAD preserve color accuracy and edge sharpness; 20 MSPS rate meets broadcast timing requirements. | Use Scenario: Converting analog output from CCD image sensors in consumer-grade digital cameras with VGA–SXGA resolution. IC Role / Device Role / Timing Role: Front-end ADC in sensor interface ASIC subsystem, sampling line-by-line at programmable rates up to 20 MSPS. Use Value: Low 60 mW power enables extended battery life; TRI-STATE outputs simplify connection to image processor's parallel bus. |
| Personal Computer Video Cameras | CCD Imaging Systems |
Use Scenario: High-fidelity USB webcams requiring clean digitization of analog camera module outputs for video conferencing. IC Role / Device Role / Timing Role: Standalone ADC interfacing between analog camera module and USB bridge IC, operating at 16.5 MSPS for 720p30 capture. Use Value: 30 ps aperture jitter minimizes motion-induced chroma noise; self-biased reference simplifies layout in space-constrained modules. | Use Scenario: Scientific and industrial CCD line-scan cameras used in machine vision inspection and spectroscopy equipment. IC Role / Device Role / Timing Role: Precision ADC in high-dynamic-range imaging chain, where DC linearity (±1.3 LSB INL) ensures accurate intensity calibration. Use Value: Ensured no missing codes and ±0.75 LSB DNL prevent banding artifacts; 120 MHz bandwidth captures fast line-scan transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit, 20 MSPS analog-to-digital converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX1175EUB+ | Pin-compatible TSSOP-10; 8-bit, 20 MSPS, but requires external REF and lacks internal S/H; 55 mW typical power. | No internal reference bias resistors or self-bias capability; needs external voltage divider for VREF, increasing BOM and layout complexity. | Select when footprint size is constrained and external reference control is preferred; verify layout compatibility with 10-pin vs. 24-pin TSSOP. |
| ADS820U | 8-bit, 20 MSPS, SOIC-28; includes internal reference but no self-bias terminals; 75 mW typical power; 6.5 LSB ENOB at 20 MSPS. | Lower ENOB (6.5 vs. 7.5 bits) and higher power limit dynamic range in demanding video applications. | Choose only if SOIC-28 is mandated by legacy board design; expect ~2 dB lower SINAD in 4.43 MHz video signals. |
Compared with MAX1175EUB+ and ADS820U, the ADC1175CIMTCX offers superior ENOB (7.5 bits), integrated S/H, and configurable self-biased reference-making it optimal for compact, low-power video digitizers where DC accuracy and layout simplicity are critical.
Availability
ADC1175CIMTCX is available at Aetrix Electronics and suitable for video digitization, digital still cameras, and personal computer video cameras requiring stable component supply, long-lifecycle support, and guaranteed commercial-temperature performance.
Supply support for ADC1175CIMTCX includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and high-performance data converters for industrial, automotive, and communications markets.
The ADC1175CIMTCX belongs to TI's precision high-speed ADC product line, engineered specifically for cost-sensitive, low-power video and imaging applications where 8-bit resolution, 20 MSPS throughput, and minimal external components are essential.
FAQ
What is the guaranteed minimum sampling rate for ADC1175CIMTCX?
The ADC1175CIMTCX has a guaranteed minimum sampling rate of 20 MSPS across the commercial temperature range (−20°C to +75°C), as specified in the CONVERTER ELECTRICAL CHARACTERISTICS table under fC1. It operates reliably up to 30 MSPS, though AC performance metrics such as ENOB and SINAD degrade above 20 MSPS.
Does ADC1175CIMTCX require an external reference voltage?
No, ADC1175CIMTCX does not require an external reference. It supports self-biasing via internal resistors: connecting VRT to VRTS and VRB to VRBS yields nominal reference voltages of ~2.6 V and ~0.6 V with a 5 V supply. External references are optional for tighter tolerance or custom full-scale ranges.
Can ADC1175CIMTCX operate with separate analog and digital supply voltages?
Yes - ADC1175CIMTCX supports independent analog (AVDD) and digital (DVDD) supplies, both rated for +4.75 V to +5.25 V. Pin 11 (DVDD core) may be operated at a lower voltage (≥2.5 V) than Pin 13 (DVDD drivers) to interface with 3.3 V logic, provided the difference remains below 0.5 V.
What is the purpose of the VRTS and VRBS pins on ADC1175CIMTCX?
The VRTS (Pin 16) and VRBS (Pin 22) pins provide internal pull-up and pull-down bias resistors for the reference ladder. Shorting VRT to VRTS and VRB to VRBS configures the ADC1175CIMTCX for self-biased operation, generating ~2.6 V and ~0.6 V reference points without external components.
Is ADC1175CIMTCX suitable for CCD imaging applications with strict linearity requirements?
Yes - ADC1175CIMTCX is suitable for CCD imaging due to its ±0.75 LSB maximum DNL (ensuring no missing codes) and ±1.3 LSB maximum INL over temperature. These specifications maintain pixel-level intensity linearity critical for scientific and industrial CCD line-scan applications where banding or shading artifacts must be avoided.
ADC1175CIMTCX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 24-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Number of Bits:
- 8
- Sampling Rate (Per Second):
- 20M
- Number of Inputs:
- 1
- Input Type:
- Single Ended
- Data Interface:
- Parallel
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- Two-Step
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 5V
- Voltage - Supply, Digital:
- 5V
- Features:
- -
- Operating Temperature:
- -20°C ~ 75°C
- Supplier Device Package:
- 24-TSSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
ADC1175CIMTCX FAQ
1.How can I place an order for ADC1175CIMTCX through Aetrix?
Please submit a Request for Quotation (RFQ) for ADC1175CIMTCX on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for ADC1175CIMTCX reliable?
The price and inventory of ADC1175CIMTCX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADC1175CIMTCX is usually 5 days.
3.What payment methods are accepted for ADC1175CIMTCX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADC1175CIMTCX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADC1175CIMTCX?
ADC1175CIMTCX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADC1175CIMTCX order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for ADC1175CIMTCX?
For technical support, including ADC1175CIMTCX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADC1175CIMTCX requirements.
6.How does Aetrix verify that ADC1175CIMTCX is sourced from the original manufacturer or authorized distributors?
All ADC1175CIMTCX products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ADC1175CIMTCX meets industry standards.
7.What is the process for return or replacement of ADC1175CIMTCX?
All ADC1175CIMTCX units undergo pre-shipment inspection (PSI). If there is an issue with ADC1175CIMTCX, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The ADC1175CIMTCX part is unused and in its original packaging.
Return procedure for ADC1175CIMTCX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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